diff --git a/.travis.yml b/.travis.yml
index 3fc6ebc..2abcd8c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,2 +1,3 @@
 rvm:
+  - 2.0.0
   - 2.1.2
\ No newline at end of file
diff --git a/lib/fb_graph2/node.rb b/lib/fb_graph2/node.rb
index f0bcbc2..afb99e1 100644
--- a/lib/fb_graph2/node.rb
+++ b/lib/fb_graph2/node.rb
@@ -3,7 +3,7 @@ module FbGraph2
     attr_accessor :id, :access_token, :raw_attributes
 
     def self.inherited(klass)
-      klass.include AttributeAssigner
+      klass.send :include, AttributeAssigner
       FbGraph2.object_classes << klass
     end
 
diff --git a/lib/fb_graph2/struct.rb b/lib/fb_graph2/struct.rb
index fb517c2..fff8515 100644
--- a/lib/fb_graph2/struct.rb
+++ b/lib/fb_graph2/struct.rb
@@ -1,7 +1,7 @@
 module FbGraph2
   class Struct
     def self.inherited(klass)
-      klass.include AttributeAssigner
+      klass.send :include, AttributeAssigner
     end
 
     def initialize(attributes = {})